Home / 853,421.16-1,177,756.98-490,845.12

Finding the Fourth Proportional to 853,421.16, 1,177,756.98 and 490,845.12

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Solution

The fourth proportional to 853,421.16, 1,177,756.98 and 490,845.12 is: 677,386.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,421.16 : 1,177,756.98 = 490,845.12 : x
  2. Step 2: Convert to fraction form
    853,421.16/1,177,756.98 = 490,845.12/x
  3. Step 3: Cross multiply
    853,421.16x = 1,177,756.98 × 490,845.12
  4. Step 4: Simplify right side
    853,421.16x = 578,096,266,178.94
  5. Step 5: Solve for x
    x = 578,096,266,178.94/853,421.16
  6. Step 6: Final answer
    x = 677,386.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.